Through the years of the automobile, the tradition in the U.S. developed for cars in a funeral procession to turn on their headlights. Texas, unlike some states, doesn't have a law forbidding people from breaking into a funeral procession.

Decades ago, cars not only stopped for a funeral procession, but men would often get out, stand by the car and take off their hat in respect. Those days, especially in the age of the constantly-worn baseball-style cap, are mostly gone.